Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
uslu.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 15:32:54 UTC · ↺ Refresh
MX Hostnames
- uslu-com.mail.protection.outlook.com
MX Priorities
- uslu-com.mail.protection.outlook.com: 10
A / AAAA Records
- 51.116.100.82 ↩ www.deitron.de
Mail Server IPs
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
a.ns14.net info.businesspark-ulm.de 2020082101 39940 14400 604800 43200
Primary NS (mname)
a.ns14.net
Admin Email (rname)
info@businesspark-ulm.de
Serial
2020082101
Refresh
39940s
Retry
14400s
Expire
604800s
Minimum TTL
43200s
Nameservers (NS)
d.ns14.net
b.ns14.net
c.ns14.net
a.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 a mx a:mail.uslu.com ip4:213.221.110.210 ip4:195.38.137.2 include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx a:mail.uslu.com ip4:213.221.110.210 ip4:195.38.137.2 include:spf.protection.outlook.com -all
- MS=ms26674342
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